PMDF System Manager's Guide

When PMDF is correctly installed, all inbound mail from any network protocol and transport supported by PMDF will be delivered to VMS MAIL users with the PMDF foreign protocol prefix, "IN%", placed at the beginning of the From: address. This ensures complete repliability, back through PMDF, of messages. If messages are coming in with any other foreign protocol prefix, then messages can not be properly repliable, and additional PMDF functionality, such as the DELIVER facility, will not work.

Incoming mail with a prefix other than "IN%" usually indicates that some PMDF slave or server program has not been properly installed or has encountered some sort of error. For TCP/IP channels, verify that you have disabled the TCP/IP package's own native SMTP server, and are using the PMDF SMTP server instead; see Chapter 23.